Fusee-cap.



R. M.- CLARK. FUSEE CAP.

APPLICATION FILED MAY 6, 1914.

1,103,263. Patented July 14,1914L I mmm@ GMM/wma THE P OPRIS PETERS C0.. PHOTO-LHNO.. WASHINGTr/N. D. C.

UNITED STATES OFFICE.

ROBERT IVI. CLARK, OF NEWTON CENTER, MASSACHUSETTS, .ASSIGNOR TO CENTRAL RAILWAY SIGNAL COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

FUSEE-CAP.

Spcccation of Letters Patent.

Application. filed May 5, 1914.

PatentedJuly 111, 1914.

SeriaI No. 836,544.

To all whom t may concern Be it known that l, ROBERT M. CLARK, a citizen of the United States, residing at Newton Center, in the county of MiddlesexY and State of Massachusetts, have invented certain new and useful Improvements in Fusco-Caps, of which the following 1s a specification, reference being had therein to the accompanying drawing.

This inventionrelates to improvements 1n fusee caps, the object of which is to form a combined closure and protecting flange by simultaneously crimping and folding 1nward the wall of the paper tube and a short tubular section, and then compress the crimped and folded portions, whereby a closure and a protecting flange are so formed that the closure can not become separated from the tubular portion of the cap.

The closures heretofore used for the tubes of fusee caps consist of a woodplug fitting within the end of the tube, the inner end of the plug having a recess, thus forming a flange against which the end of the fusee rests to protect the primer of the fusee from contact with the closure of the cap.

It is well understood by those skilled in this art that the primary objects of a fusee cap are two, one being to protect the prnner or lighting end of the fusee, and the other to carry on its outer surface a complementary lighting material which by friction with the primer, will light the fusee. It is also well known to those skilled in the art that when the fusee is to be lighted, the cap is removed and the complementary material on the outer surface thereof is caused to frictionally engage the primer of the f usee for lighting purposes, the lighting being effected in a way similar to the striking of a safety match against the complementary material on a safety match box.

Heretofore where the wood-plug is used, one way of connecting it to the tubular portion of the cap has been by driving one or more small tacks through the wall of the tube and into the wood-plug, but this has not been found entirely satisfactory, because the tacks have been known to come out and the wood-plug detached from the tube thus leaving exposed the primer of the fusee; and where the complementary igniting material is on the end of the plug, that is lost, thus destroying the means of lighting the fusee. In other instances, the wood-plug has been glued to the inner side of the tube, but this likewise has not been entirely satisfactory because, in some instances, the soft glue will flow down and cement the cap to the fusee or the soft glue run on the primer, thus materially interfering with lighting the fusee; and the glue sometimes dries out permitting the plug to become detached and, in other instances, the plug has become detached by breaking away the single inner layer of the paper tube to which it is attached, by reason of the rough usage to which fusees are frequently subjected in the hands of train-men.

By means -of the improved closure and protecting flange which is the subject matter of my present invention, the foregoing defects in the use of the wood-plug are not present; it is impossible for the closure and protecting fiange to become detached from the cap, and a simple and effective combined closure and protecting flange is provided.

In the accompanying drawings Figure 1 is a perspective view of a tube having a double walled end from which my improved closure and protecting flange is formed. Fig. 2 is a sectional view showing the tube with the double wall portion partially crimped and folded inward. Fig. 3 is a sectional view showing the cap with the closure and protecting flange completed, and being compressed between relatively station ary and revolving mandrels. Fig. 4t is a detached perspective view of the completed cap. Fig. 5 is a sectional view of the cap showing it in place on the fusee.

My improved fusee cap comprises a paper or fiber tube l of a suitable length, and` in one end of this tube is placed a relatively short section of tube 2, thus making the tube l what might be termed double walled at that end which is to be crimped, folded inward and compressed for forming the combined closure and protecting flange. This tube with its double walled end is placed upon a mandrel 3, the mandrel having a reduced upper end 4t of a size to fit within the short tubular section or double wall 2, the lower end of the tube 2 resting against the annular shoulder 5 of the mandrel 3. A rotating tool 6 having a proper internal construction, is brought in contact with the double walled end of the tube l, while the tube is held against rotation. The rotating tool crimps, folds inward and compresses the double wall of the tube 1 and forms a combined closure 6 and protecting iiange or shoulder 7 as shown in Figs. 8 and 5.

The tube from which. the cap is formed, is composed of a kind of paper which will permit its double walled end to be folded inwardwood-plug are absent; the improvementy makinga very effective fusee cap.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

l. An improved fusee cap composed of a fiber tube having at one end a double wall, the outer end of the double wall crimped and compressed inward into the closure at a point above or outside of the` inner double wall to constitute acombined closure and depending protecting flange.

paper or fiber tube having a double wall at one end, the double wall crimped and compressed inward together yand caused to interlock one with the other at a point above the inner end of the .double wall.

` 3. An improved cap comprising a paper or 2. An improved fusee cap comprising a fiber tube, a relatively short section of liber or paper tube fitting' within one end of the first said tube, both tubescrimped and compressed inward and caused to ylforrnacrin'lped and compressed inward closure at a point above the inner end of the short tubular see-- tion, thus forming a combined closure and protecting flange, the two tubes caused to interlock by the crimping and compressing action.

4s The method of closing the end of a ber fuses cap tube with a depending annular flange, which consists in providing a fiber tube having' at one enda double wall, simultaneously crimping inwardly the double wall of the tube at a point outside of the inner end of theVM double wall of the tube, and finally compressing theinwardly `crimped portion of the double wall.

5. The method of closing'the end of a fiber fusee cap tube with a depending annular fiange, which consists in providing afiber tub-e, fitting within `one end thereof a relatively short'fiber tube, simultaneously crimping inward the two tubes at a point outside of the inner end of the short tubularsection` and finally simultaneously compressing the inwardly crimped portions of the rtwo tubes, thus forming a combined closure and a depending protect-ing flange.

ln testimony whereof I hereunto affix my signature 'in the presence of two witnesses.

ROBERT M. CLARK. l/Vitnesses: l JOHN 7. EDMANCH,

ARNOLD MAoKrN'rosH.

Copiesv of this patent may be obtained for live cents each, by addressing` `the Commissioner of Patents,

Washington, D. C. 

